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From: Ran Wang <ran.wang_1@nxp.com>
To: Rob Herring <robh+dt@kernel.org>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	Biwen Li <biwen.li@nxp.com>, Shawn Guo <shawnguo@kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Leo Li <leoyang.li@nxp.com>, Ran Wang <ran.wang_1@nxp.com>,
	"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>
Subject: RE: [PATCH v3 1/5] Documentation: dt: binding: fsl: Add 'fsl,ippdexpcr1-alt-reg' property
Date: Sat, 10 Oct 2020 01:57:00 +0000
Message-ID: <AM6PR04MB54130FE1CC9B6A4C8DF2D538F1090@AM6PR04MB5413.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <20200929082234.36619-1-ran.wang_1@nxp.com>

Hi Rob,

On Tuesday, September 29, 2020 4:23 PM, Ran Wang wrote:
> 
> From: Biwen Li <biwen.li@nxp.com>
> 
> The 'fsl,ippdexpcr1-alt-reg' property is used to handle an errata A-008646 on
> LS1021A.
> 
> Signed-off-by: Biwen Li <biwen.li@nxp.com>
> Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
> ---
> Change in v3:
>  - Simplize related proterty definition and rename it.

Could you please comment for this version? Thanks in advance.

Regards,
Ran

> Change in v2:
>  - None
> 
>  Documentation/devicetree/bindings/soc/fsl/rcpm.txt | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> index 5a33619..62a22fc 100644
> --- a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> +++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
> @@ -34,6 +34,9 @@ Chassis Version		Example Chips
>  Optional properties:
>   - little-endian : RCPM register block is Little Endian. Without it RCPM
>     will be Big Endian (default case).
> + - fsl,ippdexpcr1-alt-reg : The property is trying to workaround a
> +   hardware issue (found on SoC LS1021A only), if pressent, RCPM driver
> +   will use SCFG_SPARECR8 as a shadow register for RCPM_IPPDEXPCR1.
> 
>  Example:
>  The RCPM node for T4240:
> @@ -43,6 +46,15 @@ The RCPM node for T4240:
>  		#fsl,rcpm-wakeup-cells = <2>;
>  	};
> 
> +The RCPM node for LS1021A:
> +	rcpm: rcpm@1ee2140 {
> +		compatible = "fsl,ls1021a-rcpm", "fsl,qoriq-rcpm-2.1+";
> +		reg = <0x0 0x1ee2140 0x0 0x8>;
> +		#fsl,rcpm-wakeup-cells = <2>;
> +		fsl,ippdexpcr1-alt-reg;
> +	};
> +
> +
>  * Freescale RCPM Wakeup Source Device Tree Bindings
>  -------------------------------------------
>  Required fsl,rcpm-wakeup property should be added to a device node if the
> device
> --
> 2.7.4


      parent reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-29  8:22 [PATCH v3 1/5] Documentation: dt: binding: fsl: Add 'fsl, ippdexpcr1-alt-reg' property Ran Wang
2020-09-29  8:22 ` [PATCH v3 2/5] soc: fsl: handle RCPM errata A-008646 on SoC LS1021A Ran Wang
2020-09-29  8:22 ` [PATCH v3 3/5] arm: dts: ls1021a: enable RCPM workaround for erratum A-008646 Ran Wang
2020-09-29  8:22 ` [PATCH v3 4/5] arm: dts: ls1021a: fix flextimer failed to wake system Ran Wang
2020-09-29  8:22 ` [PATCH v3 5/5] arm: dts: ls1021a: fix rcpm failed to claim resource Ran Wang
2020-10-10  1:57 ` Ran Wang [this message]

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